I am struggling to get things to work like input switching. I also have an AppleTV connected. The power button doesn't seem to work or the home key or settings key. Do I need to set this up as 2 devices? A TV and a FireTV? Amazon is the manufacturer so I don't know how to make it work with the usual TV portion of it. It is a bluetooth remote, so I don't know how to use it to learn new buttons.